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Related Experiment Video

Updated: Jun 4, 2026

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

Magnetic Field-Boosted Pt Utilization in MOFs for Efficient Hydrogen Evolution Reaction.

Zhong Wang1, Chuhan Wang1, Tanzhuo Hao1

  • 1School of Metallurgy, Northeastern University, Shenyang 110819, China.

ACS Applied Materials & Interfaces
|June 2, 2026
PubMed
Summary
This summary is machine-generated.

A novel magnetic field strategy significantly boosts platinum utilization for efficient hydrogen production via water electrolysis. This method overcomes mass-transfer limits in metal-organic frameworks, enhancing catalytic performance and reducing costs.

Keywords:
Pt utilizationhigh efficiencyhydrogen evolution reactionmagnetic fieldmagnetohydrodynamic

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Platinum (Pt) scarcity and cost impede industrial hydrogen production via water electrolysis.
  • Metal-organic frameworks (MOFs) offer Pt dispersion but face mass-transfer limitations.
  • Efficient Pt utilization is crucial for cost-effective hydrogen generation.

Purpose of the Study:

  • To develop a strategy for enhanced Pt utilization in catalysts for hydrogen evolution reaction (HER).
  • To overcome mass-transfer limitations in MOF-templated catalysts.
  • To improve the efficiency and reduce the cost of hydrogen production.

Main Methods:

  • A magnetic field modulation strategy utilizing the magnetohydrodynamic (MHD) effect during ion exchange in a ZnCo-ZIF precursor.
  • Preparation of a Pt-Co/NC-0.5 T catalyst under a 0.5 T magnetic field.
  • Electrochemical evaluation of the catalyst's hydrogen evolution reaction (HER) performance in 1 M KOH.

Main Results:

  • Achieved a 2.5-fold increase in Pt utilization, overcoming mass-transfer limitations.
  • The Pt-Co/NC-0.5 T catalyst demonstrated an ultralow overpotential of 9 mV at 10 mA cm-2.
  • Mass activity was 15.5-fold higher than Pt-Co/NC and 3.5-fold higher than commercial Pt/C.
  • Turnover frequency (TOF) reached 0.387 s-1 at 100 mV overpotential, 2.7-fold higher than Pt-Co/NC.

Conclusions:

  • Magnetic field modulation effectively enhances Pt mass transfer efficiency within MOF confined spaces.
  • This strategy offers a pathway to highly efficient, low-cost hydrogen production catalysts.
  • The developed catalyst significantly outperforms existing benchmarks for HER catalysis.